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Class 12 NEET Physics Moving Charges and Magnetism
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© examsnet.com
Question : 7
Total: 96
From Ampere's circuital law for a long straight wire of circular cross-section carrying a steady current, the variation of magnetic field in the inside and outside region of the wire is
[NEET-2022]
Uniform and remains constant for both the regions.
A linearly increasing function of distance upto the boundary of the wire and then linearly decreasing for the outside region.
A linearly increasing function of distance
r
upto the boundary of the wire and then decreasing one with
1
r
dependence for the outside region.
A linearly decreasing function of distance upto the boundary of the wire and then a linearly increasing one for the outside region.
Validate
Solution:
👈: Video Solution
For solid wire Inside point
B
=
µ
0
∕
r
2
R
2
×
2
π
r
=
µ
0
I
r
R
2
×
2
π
B
∝
r
Outside point
B
=
µ
0
I
2
π
r
B
∝
1
r
© examsnet.com
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